Login Event

This event is called whenever a task must authenticate with PhoneGap/Build
and the credentials are unknown. If only the username or only the password
is known, the it is passed into the event as the options object.

The developer should listen on this event and correctly retrieve the login
credentials: looking them up from storage or prompting the user. Once
the credentials are found, the callback can be fired with the correct
credentials.

Build an App

Builds the application using PhoneGap/Build. If the application does not
exist, then it is first created. Currently, the build task only supports
file transfers (zip) but will be extended to git repositories in the future.

Options:

options {Object} is data required for building a platform.

options.platforms {Array} is a collection of platform names {String} that